Alright, let's work through 4987 times 8540 step by step
4987 × 8540 = 8540 × (4987)
+ 8540 × 7 that results in 59780
+ 8540 × 80 which equals 683200
+ 8540 × 900 that equals 7686000
+ 8540 × 4000 what gives us 34160000

= 42588980
